EP0932447B1 - A method and an apparatus for recycling different components in a multiple layer material - Google Patents
A method and an apparatus for recycling different components in a multiple layer material Download PDFInfo
- Publication number
- EP0932447B1 EP0932447B1 EP19970928603 EP97928603A EP0932447B1 EP 0932447 B1 EP0932447 B1 EP 0932447B1 EP 19970928603 EP19970928603 EP 19970928603 EP 97928603 A EP97928603 A EP 97928603A EP 0932447 B1 EP0932447 B1 EP 0932447B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pieces
- drum
- slushed
- readily
- pulped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
- B02C7/06—Crushing or disintegrating by disc mills with coaxial discs with horizontal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
- B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/20—Stationary drums with moving interior agitators
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/026—Separating fibrous materials from waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0251—Hydropulping for converting the material under the influence of water into a slurry, e.g. for separating laminated plastic from paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0484—Grinding tools, roller mills or disc mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29K2705/02—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
- B29K2711/12—Paper, e.g. cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/003—Layered products comprising a metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/005—Layered products coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to a method of recovering the various components of multiple layer materials, such as materials that consist of paper, plastic and aluminium foil, and more specifically to a method of the kind defined in the preamble of Claim 1.
- the invention also relates to plant for recovering such components.
- Handling of material, e.g. multiple layer material, for recycling purposes entails comparatively high costs in transporting the material to a recovery plant. For this reason it is unrealistic to expect that the actual recovery plant can have a very large capacity. This would mean that the capital cost of the actual recovery plant would be so high as to cause a large recovery area with correspondingly high transport costs from peripheral parts thereof to exceed the processing value of the product obtained in the recovery plant.
- This product shall subsequently constitute one of several different starting materials for subsequent manufacturing processes or refinement processes.
- SE,B,417 623 discloses a method of the kind defined in the preamble of Claim 1, in which particles processed in a disperser are rolled to form small compact grains.
- the known method requires comprehensive treatment of the material upstream of the disperser and is therefore expensive and highly energy consuming.
- SE,B,383 006 (Munksjö) described a method of recovering fibers from waste paper with the aid of a rotatable perforated drum provided with lifting means. The document is not concerned with layer separation of waste material.
- An object of the present invention is to provide a method and processing plant of the aforedescribed kind which will enable the components of multiple layer materials to be separated effectively without consuming large quantities of energy, and which will enable said components to be handled and recovered for further processing in a comparatively simple manner.
- Another object of the invention is to provide a method and processing plant of the aforesaid kind that will enable the components of multiple layer materials to be also recovered economically in plants of comparatively limited capacity.
- the invention is based on the discovery that the components of multiple layer material can be separated effectively by subjecting adjacent layers to shear forces that loosen the various layers from one another without needing to subject the layers to any substantial degree of disintegration in conjunction with the layer-shearing or layer-separating operation.
- the size of the layers of material loosened by friction may thus be in the order of an A4-size or smaller.
- Recovery of the paper present in such materials can be facilitated by slushing or defibering the paper to some extent in conjunction with or in connection with releasing or loosening the layers in said material.
- This paper slushing or suspending process can be continued and amplified in a following treatment stage.
- Separation of the layers by shearing action can be made effective by using discs of different constructions in accordance with the nature of the starting material concerned, said discs being arranged to rotate relative to one another.
- the discs In some cases it is sufficient for the discs to have comparatively smooth or planar surfaces, wherewith the friction to which the material is subjected when in engagement with the discs is sufficient to produce the shearing effect desired.
- the thickness of the multiple layer material is the thickness of the multiple layer material and the width of the gap between the discs.
- the width of the gap can be varied, for instance so as to decrease radially and thus have the smallest value in the peripheral region of the discs.
- the state of the material supplied is also significant to the result of the layer shearing or layer separating operation.
- the properties of a multiple layer material that has been moistened upstream of the infeed zone of the refiner or in said infeed zone and/or that has been heated, for instance with steam, will be different to material that is supplied to the infeed zone in a dry state.
- Those parameters that have an effect on the result of the operation in conjunction with the actual layer shearing operation include the construction of the disc surfaces or of the disc-carried material engaging elements, the size of the gap width, the speed at which the discs rotate, the amount of dilution liquid or suspension liquid supplied, and so on.
- the various layers are pumped together with the dilution liquid added to the process optionally to a collecting vessel which may, in certain cases, be suitable in order to equalize variations in flow from the refiner.
- the counterpressure is suitably generated by taking-up the pieces of material and the suspension liquid in a conduit, suitably a U-shaped conduit, which is extended to a given level above the refiner acting as a pump.
- the final separation stage is effected by delivering the separated pieces of material present in the suspension liquid - optionally via a collecting vessel of the aforesaid kind - in the form of a pulp suspension to a generally horizontal, rotating, perforated drum that includes an internal screw feeder. Additional suspension or dilution liquid is supplied to the drum, preferably sprayed thereinto from the upper part of the drum. Those layers of material that are able to pass into suspension, e.g. relatively finely-divided pieces of paper, are able to depart through the perforations, whereas those material layers that cannot readily pass into suspension, such as pieces of aluminium and plastic, are fed out of the drum at one end by the screw feeder. Suitably constructed vessels for receiving the different materials and the suspension liquid are suitably provided beneath the drum.
- Final separation of metal pieces, e.g. aluminium pieces from the normally larger plastic pieces may be effected in a known manner, e.g. with the aid of the force of gravity.
- the size of the gap may be adapted so that the pieces of metal and plastic will have a size suitably smaller than an A4-size, for instance a size of up to 30-40 mm subsequent to separation.
- the shape of the separated pieces will normally vary greatly.
- One particular advantage afforded by the inventive method is that separation can normally be effected without the addition of chemicals, and is therewith beneficial from an environmental aspect.
- improved effectiveness can be achieved by adding chemicals suitable for the purpose intended.
- Another advantage afforded by the invention is that the introductory separation of the layers of a multiple layer material takes place very quickly in practice, therewith facilitating pulping or slushing of the separated paper in a subsequent process.
- the invention also relates to recovery plant for recovering different components of multiple layer materials, for instance material that consists of paper, plastic and aluminium foil, the main characteristic features of the plant being set forth in Claim 6.
- the drawing shows a recovery plant 1 for recovering various components from multiple layer materials, for instance materials that consist of paper, plastic and aluminium foil.
- the plant includes two main parts, namely a refiner or disperser 2 which is adapted to separate readily slushed layers of material from layers that are not readily slushed by means of a shearing operation, and a generally horizontal, rotatable, perforated drum 3 that includes an internal screw feeder and to which separated pieces of the various material layers are delivered together with suspension liquid. Readily slushed material taken-up by the suspension liquid and separated from less readily slushed layer material are removed from the drum.
- the refiner or disperser 2 includes an outwardly flared or funnel-shaped infeed zone 4 that adjoins a housing in which a fixed disc or stator disc 5 and a rotatable disc or rotor disc 6 are mounted.
- the horizontal rotor shaft is referenced 7 and carries at one end the aforesaid rotor 8, which has the form of an impeller provided with blades or vanes 8a.
- the two discs 5, 6 define therebetween a gap whose width or depth can be adjusted, by displacing the rotor shaft 7 with the aid of an hydraulic device mounted in the rotor shaft casing in a manner not shown.
- the gap between the discs is adjusted so that the material introduced through the infeed zone 4 will be subjected to shear forces as the rotor disc 6 rotates relative to the stator disc 5. These shear forces mutually separate the component layers of the multilayer material.
- both discs 5 and 6 include material engaging elements in the form of teeth 5a and 6a respectively.
- Other types of engagement elements may alternatively be used, or one or both disc surfaces may be smooth.
- Suspension liquid 21 is delivered to the pump housing through a delivery pipe that includes a tap 19, wherewith readily slushed material pieces 20', in the illustrated case shredded or essentially whole paper pieces, are separated in the pump housing from pieces of material 20" that are more difficult to slush or suspend, e.g. material pieces that consist of aluminium layers coated with plastic foil.
- the pumping action generated by the pump rotor 8 creates a subpressure in the infeed zone 4 where the multiple layer material is delivered in the form of pieces 20.
- the multiple layer material may be delivered to the infeed zone with the aid of an appropriate conveyer, or may be blown thereinto with the aid of a blower.
- the rotor shaft 7 is vertical and the force of gravity may be used to simply hold the pieces 20 of multiple layer material down in the infeed zone 4.
- the pieces of material 20 Prior to being delivered to the infeed zone 4, the pieces of material 20 may be pre-treated, e.g. moistened with water and/or heated, e.g. steam heated, such as to facilitate the aforedescribed frictional separation of the layers in accordance with the properties of the multiple layer material being treated.
- pre-treated e.g. moistened with water and/or heated, e.g. steam heated, such as to facilitate the aforedescribed frictional separation of the layers in accordance with the properties of the multiple layer material being treated.
- the refiner or disperser 2 quickly separates different layers one from the other, so as to facilitate pulping or slushing of paper in a subsequent process.
- the suspension of separated pieces 20' and 20" is pumped against a counterpressure. This is achieved in the illustrated embodiment with the aid of a U-shaped conduit 12.
- the conduit 12 may have a height of about 15 m, so as to generate a counterpressure of 1.5 bar.
- a rubber hose of shorter length may be used, and the desired counterpressure generated through the medium of one or more constrictions. These constrictions may be obtained by necking-in the hose with the aid of ties. It is also feasible in principle to provide the conduit 12 or the hose with one or more throttle valves. However, the valves used in this latter alternative are liable to become clogged.
- the conduit 12 or a corresponding hose optionally provided with constrictions or throttled regions opens into a collecting vessel (not shown) for receiving the suspension in question.
- a collecting vessel (not shown) for receiving the suspension in question.
- the use of such a vessel will ensure the continuity of the separation process, even when the delivery of multiple layer material to the infeed zone is relatively uneven.
- the pieces of material 20' suspended in the suspension liquid may also be further disintegrated in such a vessel, thereby enabling subsequent treatment of the material in the drum 3 to be carried out more simply and more quickly.
- the conduit 12 opens into the drum 3.
- the drum includes a generally horizontal shaft which is provided with perforations 3a and is carried and slowly rotated by wheels 26 that engage the periphery of the drum.
- a horizontal screw feeder 15 whose height corresponds to 10-20% of the drum radius.
- a sprinkler system in the form of a pipe 16 that includes nozzles by means of which additional liquid, preferably water, can be delivered to the suspension in the drum interior.
- Finely divided, readily slushed material comprising chiefly of water-suspended paper fibers 20' are able to depart down through the perforations 3a in the drum under the force of gravity, and are collected in an underlying vessel 17 and recovered for use in paper manufacture.
- the material layers 20" that are more difficult to slush or pulp are conveyed axially by the screw feeder 15 and depart from that end of the drum remote from the conduit 12, and collected in the form of a material-liquid mixture 25 in a vessel 18.
- the components of these pieces of material 20" such as aluminium and plastic for instance, can be further separated if so desired and then utilized individually in some suitable way.
- the perforations 3a in the drum 3 may have a diameter of 20 mm, therewith enabling pulp pieces in the liquid suspension having a size smaller than 20 mm to pass down into the vessel 17.
- the suspension may have a pulp consistency of some 4-8% for instance, which thus means that a relatively large volume of water 21 and 22 must be supplied via the devices 19 and 16.
- a plant constructed in accordance with the invention is suitably adapted for continual operation and can have a high capacity despite its relatively small dimensions.
- Trials have shown that the mechanical shear process to which the material is subjected can be achieved with an energy consumption in the order of 30 Kwh per ton.
- the energy consumption required by the shearing process undertaken according to the document to Escher Wyss is three times as great, according to the values given in said document.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Transplanting Machines (AREA)
- Container Filling Or Packaging Operations (AREA)
- Threshing Machine Elements (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
Description
- The present invention relates to a method of recovering the various components of multiple layer materials, such as materials that consist of paper, plastic and aluminium foil, and more specifically to a method of the kind defined in the preamble of
Claim 1. - The invention also relates to plant for recovering such components.
- Handling of material, e.g. multiple layer material, for recycling purposes entails comparatively high costs in transporting the material to a recovery plant. For this reason it is unrealistic to expect that the actual recovery plant can have a very large capacity. This would mean that the capital cost of the actual recovery plant would be so high as to cause a large recovery area with correspondingly high transport costs from peripheral parts thereof to exceed the processing value of the product obtained in the recovery plant. This product shall subsequently constitute one of several different starting materials for subsequent manufacturing processes or refinement processes.
- Consequently a plurality of recovery plants that have somewhat limited capacity and that serve a not unduly large recovery area can therefore be expected to show the highest returns from an economic aspect.
- Recovery of the components of multiple layer materials, for instance recovery of paper, plastic and aluminium foil from beverage packaging materials, has earlier been achieved with the aid of large drum pulpers or traditional pulpers, to which chemicals are normally added. Such large plants incur heavy investment costs, require large construction and installation areas, and consume large amounts of energy, which explains why such plants have not been used more widely.
- SE,B,417 623 (Escher Wyss) discloses a method of the kind defined in the preamble of
Claim 1, in which particles processed in a disperser are rolled to form small compact grains. The known method requires comprehensive treatment of the material upstream of the disperser and is therefore expensive and highly energy consuming. - SE,B,383 006 (Munksjö) described a method of recovering fibers from waste paper with the aid of a rotatable perforated drum provided with lifting means. The document is not concerned with layer separation of waste material.
- An object of the present invention is to provide a method and processing plant of the aforedescribed kind which will enable the components of multiple layer materials to be separated effectively without consuming large quantities of energy, and which will enable said components to be handled and recovered for further processing in a comparatively simple manner.
- Another object of the invention is to provide a method and processing plant of the aforesaid kind that will enable the components of multiple layer materials to be also recovered economically in plants of comparatively limited capacity.
- These and other objects are fulfilled with an inventive method that has the characteristic features set forth in
Claim 1. - The invention is based on the discovery that the components of multiple layer material can be separated effectively by subjecting adjacent layers to shear forces that loosen the various layers from one another without needing to subject the layers to any substantial degree of disintegration in conjunction with the layer-shearing or layer-separating operation.
- Thus, there are obtained pieces or fragments of the various components that may have a more or less regular shape or a totally irregular shape.
- The size of the layers of material loosened by friction may thus be in the order of an A4-size or smaller.
- It is often of value to recover primarily paper from multiple layer material. However, application of the inventive method will also make the recovery of other components of the material, such as aluminium and plastic for instance, also economically justifiable.
- Recovery of the paper present in such materials can be facilitated by slushing or defibering the paper to some extent in conjunction with or in connection with releasing or loosening the layers in said material. This paper slushing or suspending process can be continued and amplified in a following treatment stage.
- Separation of the layers by shearing action can be made effective by using discs of different constructions in accordance with the nature of the starting material concerned, said discs being arranged to rotate relative to one another.
- In some cases it is sufficient for the discs to have comparatively smooth or planar surfaces, wherewith the friction to which the material is subjected when in engagement with the discs is sufficient to produce the shearing effect desired.
- In other cases, different types of engagement elements, such as teeth, bars, grooves, serrations or like elements, are required on one or both discs in order to ensure that the intended layer separation effect is achieved.
- One significant factor that determines which disc construction shall be used is the thickness of the multiple layer material and the width of the gap between the discs. The width of the gap can be varied, for instance so as to decrease radially and thus have the smallest value in the peripheral region of the discs.
- The state of the material supplied is also significant to the result of the layer shearing or layer separating operation.
- The properties of a multiple layer material that has been moistened upstream of the infeed zone of the refiner or in said infeed zone and/or that has been heated, for instance with steam, will be different to material that is supplied to the infeed zone in a dry state. Those parameters that have an effect on the result of the operation in conjunction with the actual layer shearing operation include the construction of the disc surfaces or of the disc-carried material engaging elements, the size of the gap width, the speed at which the discs rotate, the amount of dilution liquid or suspension liquid supplied, and so on.
- Upon completion of the layer separating or layer shearing operation, the various layers are pumped together with the dilution liquid added to the process optionally to a collecting vessel which may, in certain cases, be suitable in order to equalize variations in flow from the refiner.
- The provision of such a collecting vessel will not be necessary in certain cases, and the separated pieces of material present in the dilution liquid can be pumped directly to a separator in which readily suspended or slushed material layers in the suspension liquid are removed separately from material layers that are not readily slushed.
- Pumping of separated material layers taken-up in the suspension liquid is suitably effected against a generated counterpressure. Trials have shown that the use of a valve or valves in order to generate this counterpressure is impractical, because of the risk of the valve or valves becoming clogged by the separated pieces of material. Instead, the counterpressure is suitably generated by taking-up the pieces of material and the suspension liquid in a conduit, suitably a U-shaped conduit, which is extended to a given level above the refiner acting as a pump.
- The final separation stage is effected by delivering the separated pieces of material present in the suspension liquid - optionally via a collecting vessel of the aforesaid kind - in the form of a pulp suspension to a generally horizontal, rotating, perforated drum that includes an internal screw feeder. Additional suspension or dilution liquid is supplied to the drum, preferably sprayed thereinto from the upper part of the drum. Those layers of material that are able to pass into suspension, e.g. relatively finely-divided pieces of paper, are able to depart through the perforations, whereas those material layers that cannot readily pass into suspension, such as pieces of aluminium and plastic, are fed out of the drum at one end by the screw feeder. Suitably constructed vessels for receiving the different materials and the suspension liquid are suitably provided beneath the drum.
- Final separation of metal pieces, e.g. aluminium pieces from the normally larger plastic pieces may be effected in a known manner, e.g. with the aid of the force of gravity.
- In order to ensure that pieces of metal, e.g. aluminium, and plastic separated from the paper pieces are not disintegrated to the same extent as said paper pieces, the size of the gap may be adapted so that the pieces of metal and plastic will have a size suitably smaller than an A4-size, for instance a size of up to 30-40 mm subsequent to separation. The shape of the separated pieces, however, will normally vary greatly.
- One particular advantage afforded by the inventive method is that separation can normally be effected without the addition of chemicals, and is therewith beneficial from an environmental aspect. When certain particular materials are to be separated with the aid of the invention, improved effectiveness can be achieved by adding chemicals suitable for the purpose intended.
- Another advantage afforded by the invention is that the introductory separation of the layers of a multiple layer material takes place very quickly in practice, therewith facilitating pulping or slushing of the separated paper in a subsequent process.
- According to another aspect, the invention also relates to recovery plant for recovering different components of multiple layer materials, for instance material that consists of paper, plastic and aluminium foil, the main characteristic features of the plant being set forth in
Claim 6. - Further characteristic features of the inventive method and the inventive plant will be apparent from the following description of an exemplifying embodiment thereof. The description is given with reference to the accompanying drawing which is a partially sectioned side view of some main parts of an inventive plant.
- The drawing shows a
recovery plant 1 for recovering various components from multiple layer materials, for instance materials that consist of paper, plastic and aluminium foil. The plant includes two main parts, namely a refiner or disperser 2 which is adapted to separate readily slushed layers of material from layers that are not readily slushed by means of a shearing operation, and a generally horizontal, rotatable, perforateddrum 3 that includes an internal screw feeder and to which separated pieces of the various material layers are delivered together with suspension liquid. Readily slushed material taken-up by the suspension liquid and separated from less readily slushed layer material are removed from the drum. - The refiner or disperser 2 includes an outwardly flared or funnel-shaped
infeed zone 4 that adjoins a housing in which a fixed disc orstator disc 5 and a rotatable disc orrotor disc 6 are mounted. The horizontal rotor shaft is referenced 7 and carries at one end the aforesaid rotor 8, which has the form of an impeller provided with blades orvanes 8a. The twodiscs rotor shaft 7 with the aid of an hydraulic device mounted in the rotor shaft casing in a manner not shown. The gap between the discs is adjusted so that the material introduced through the infeedzone 4 will be subjected to shear forces as therotor disc 6 rotates relative to thestator disc 5. These shear forces mutually separate the component layers of the multilayer material. - In the illustrated embodiment, both
discs teeth 5a and 6a respectively.
Other types of engagement elements may alternatively be used, or one or both disc surfaces may be smooth. -
Suspension liquid 21 is delivered to the pump housing through a delivery pipe that includes atap 19, wherewith readily slushed material pieces 20', in the illustrated case shredded or essentially whole paper pieces, are separated in the pump housing from pieces ofmaterial 20" that are more difficult to slush or suspend, e.g. material pieces that consist of aluminium layers coated with plastic foil. - The pumping action generated by the pump rotor 8 creates a subpressure in the infeed
zone 4 where the multiple layer material is delivered in the form ofpieces 20. The multiple layer material may be delivered to the infeed zone with the aid of an appropriate conveyer, or may be blown thereinto with the aid of a blower. - In an alternative embodiment, the
rotor shaft 7 is vertical and the force of gravity may be used to simply hold thepieces 20 of multiple layer material down in theinfeed zone 4. - Prior to being delivered to the
infeed zone 4, the pieces ofmaterial 20 may be pre-treated, e.g. moistened with water and/or heated, e.g. steam heated, such as to facilitate the aforedescribed frictional separation of the layers in accordance with the properties of the multiple layer material being treated. - The refiner or disperser 2 quickly separates different layers one from the other, so as to facilitate pulping or slushing of paper in a subsequent process.
- The suspension of separated
pieces 20' and 20" is pumped against a counterpressure. This is achieved in the illustrated embodiment with the aid of aU-shaped conduit 12. Theconduit 12 may have a height of about 15 m, so as to generate a counterpressure of 1.5 bar. - Alternatively, a rubber hose of shorter length may be used, and the desired counterpressure generated through the medium of one or more constrictions. These constrictions may be obtained by necking-in the hose with the aid of ties. It is also feasible in principle to provide the
conduit 12 or the hose with one or more throttle valves. However, the valves used in this latter alternative are liable to become clogged. - As beforementioned, the
conduit 12 or a corresponding hose optionally provided with constrictions or throttled regions opens into a collecting vessel (not shown) for receiving the suspension in question. The use of such a vessel will ensure the continuity of the separation process, even when the delivery of multiple layer material to the infeed zone is relatively uneven. The pieces of material 20' suspended in the suspension liquid may also be further disintegrated in such a vessel, thereby enabling subsequent treatment of the material in thedrum 3 to be carried out more simply and more quickly. - In the illustrated case, however, the
conduit 12 opens into thedrum 3. The drum includes a generally horizontal shaft which is provided withperforations 3a and is carried and slowly rotated bywheels 26 that engage the periphery of the drum. - Mounted in the drum is a
horizontal screw feeder 15 whose height corresponds to 10-20% of the drum radius. Also mounted in the drum is a sprinkler system in the form of apipe 16 that includes nozzles by means of which additional liquid, preferably water, can be delivered to the suspension in the drum interior. - Finely divided, readily slushed material comprising chiefly of water-suspended paper fibers 20' are able to depart down through the
perforations 3a in the drum under the force of gravity, and are collected in anunderlying vessel 17 and recovered for use in paper manufacture. - The material layers 20" that are more difficult to slush or pulp are conveyed axially by the
screw feeder 15 and depart from that end of the drum remote from theconduit 12, and collected in the form of a material-liquid mixture 25 in avessel 18. The components of these pieces ofmaterial 20", such as aluminium and plastic for instance, can be further separated if so desired and then utilized individually in some suitable way. - The
perforations 3a in thedrum 3 may have a diameter of 20 mm, therewith enabling pulp pieces in the liquid suspension having a size smaller than 20 mm to pass down into thevessel 17. - The suspension may have a pulp consistency of some 4-8% for instance, which thus means that a relatively large volume of
water devices - A plant constructed in accordance with the invention is suitably adapted for continual operation and can have a high capacity despite its relatively small dimensions. Trials have shown that the mechanical shear process to which the material is subjected can be achieved with an energy consumption in the order of 30 Kwh per ton. The energy consumption required by the shearing process undertaken according to the document to Escher Wyss is three times as great, according to the values given in said document.
Claims (9)
- A method of recovering the different components of multiple layer materials, such as materials consisting of paper, plastic and aluminium foil, in which method the material (20) is delivered to an infeed zone (4) of a refiner or disperser (2) that includes mutually opposing discs (5; 6) which rotate relative to one another and which include material engaging surfaces or material engaging elements, such as teeth (5a; 6a) for instance; characterized bya) adjusting the gap between the discs (5; 6) so that the material (20) will be subjected to a shear force that mutually separates the material layers in the form of pieces or fragments in the absence of any substantial disintegration of said layers; andb) pumping separated pieces (20'; 20") of the various layers together with supplied suspension liquid (21) to a separator (3), optionally via a collecting vessel, and separating readily pulped or slushed pieces of material (20') suspended in the suspension liquid from pieces of material (20") that are not readily pulped or slushed in said liquid.
- A method according to Claim 1, characterized by pumping the separated material layers suspended in the suspension liquid against a counterpressure by blades or vanes (8a) mounted on the rotor disc (6) of the refiner (2).
- A method according to Claim 1 or 2, in which the mutually separated material layers (20'; 20") suspended in the suspension liquid (21) are delivered to a generally horizontal, rotating, perforated drum (3) to which further suspension liquid (22) is supplied, preferably by spraying, and from which readily slushed or pulped pieces of material (20') depart through the perforations (3a), characterized by discharging the not-readily slushed or pulped pieces of material (20") through one end of the drum with the aid of a screw feeder (15) mounted in said drum.
- A method according to any one of Claims 1-3, characterized by pre-treatment the multiple layer material (20), e.g. moistening and/or heating said material, preferably with steam, in said infeed zone (4) or prior to delivering said material to said infeed zone.
- A method according to Claim 2 or to one of Claims 3 or 4 as dependent on Claim 2, characterized by generating said counterpressure in a hose or conduit that connects the refiner outlet with the inlet of the collecting vessel or the drum (3), in the absence of valves.
- Recovery plant for recovering different components of multiple layer materials, for instance materials that consist of paper, plastic and aluminium foil, wherein the plant includesa) a refiner or disperser (2) that includes an infeed zone (4), said refiner or disperser having a housing which accommodates mutually opposing discs (5; 6) that include material engagement surfaces or material engagement elements, such as teeth (5a; 6a);b) means for rotating one disc (6) relative to the other (5);c) means (21) for delivering suspension liquid to the housing; andd) a rotor (8) that includes pump blades or vanes (8a), and a hose or conduit (12) for pumping layer material that has been separated between the discs by shearing action, wherein the plant is characterized bye) means for varying the distance between the discs (5; 6) such that layer material separated in the form of material pieces or fragments in the absence of substantial disintegrationf) a separator (3) to which the separated pieces are deliverable, optionally via a collection vessel, and from which readily pulped or slushed pieces of material (20') suspended in the suspension liquid (21) are removable separately from pieces of material (20") that are not readily slushed or pulped.
- Plant according to Claim 6, characterized in that the hose or conduit (12) is adapted to generate a counterpressure to the pump pressure generated by the pump vanes or blades, in the absence of throttle valves that impede the flow of material.
- Plant according to Claim 6 or 7, in which the separator (3) is a drum and in which the drum includes means for supplying additional suspension liquid to the material suspension in the drum, for instance a conduit (22) provided with spray nozzles, characterized in that the drum has mounted therein a screw feeder (15) for discharging layer material (20") that is not readily pulped or slushed through one end of the drum, while readily pulped or slushed layer material (20') departs through perforations (3a) in the drum periphery.
- Plant according to any one of Claims 6-8, characterized by a collecting vessel (17) provided beneath the drum for the purpose of collecting a suspension of readily pulped layer material (24); and by a vessel (18) provided in the region of the drum outfeed end for collecting a suspension (25) of layer material that is not readily slushed or pulped.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9602481A SE506804C2 (en) | 1996-06-24 | 1996-06-24 | Methods and plant for recycling various components in multilayer material |
SE9602481 | 1996-06-24 | ||
PCT/SE1997/001076 WO1997049494A1 (en) | 1996-06-24 | 1997-06-17 | A method and an apparatus for recycling different components in a multiple layer material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0932447A1 EP0932447A1 (en) | 1999-08-04 |
EP0932447B1 true EP0932447B1 (en) | 2002-05-02 |
Family
ID=20403126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970928603 Expired - Lifetime EP0932447B1 (en) | 1996-06-24 | 1997-06-17 | A method and an apparatus for recycling different components in a multiple layer material |
Country Status (10)
Country | Link |
---|---|
US (1) | US6206199B1 (en) |
EP (1) | EP0932447B1 (en) |
JP (1) | JP2000513267A (en) |
AT (1) | ATE216915T1 (en) |
CA (1) | CA2258968A1 (en) |
DE (1) | DE69712353T2 (en) |
DK (1) | DK0932447T3 (en) |
NO (1) | NO986123L (en) |
SE (1) | SE506804C2 (en) |
WO (1) | WO1997049494A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016087220A1 (en) * | 2014-12-04 | 2016-06-09 | Andritz Ag | Method for the preparation of electrical and electronic components for the recovery of valuable substances |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU757144B2 (en) | 1998-04-29 | 2003-02-06 | Amut S.P.A. | Machine for the treatment of products made of plastic material of the recyclable type |
HU221121B1 (en) * | 1998-06-16 | 2002-08-28 | Technoplast 2000 Kkt | Process for gaining out not vulcanize rubber composition-base material from semi finished technical rubber products especially from rubber hoses and apparatus for the process |
DE102009057687A1 (en) * | 2009-12-09 | 2011-06-16 | Siemer, Bernhard | Method and device for the treatment of biomass |
US20140050934A1 (en) * | 2011-04-20 | 2014-02-20 | Basf Se | Cellulosic barrier packaging material |
JP6146665B2 (en) * | 2013-09-12 | 2017-06-14 | 株式会社石垣 | Sludge treatment method |
EP3026026B1 (en) | 2013-07-26 | 2019-03-27 | Ishigaki Company Limited | Recovery device and recovery method for recovering specific material from sludge |
JP6112475B2 (en) * | 2013-07-26 | 2017-04-12 | 株式会社石垣 | Extraction device |
AT515557B1 (en) * | 2014-05-28 | 2015-10-15 | Andritz Ag Maschf | Process for the preparation of packaging material |
US9968971B1 (en) * | 2014-07-11 | 2018-05-15 | Plastic Revolutions, Inc. | Friction washer that cleans plastic for recycling |
JP6317265B2 (en) * | 2015-01-22 | 2018-04-25 | 株式会社大貴 | Separation apparatus and method for producing water-absorbing treatment material |
CN110328780B (en) * | 2019-05-13 | 2021-06-01 | 哈工大泰州创新科技研究院有限公司 | Polyethylene recovery method |
PL3754106T3 (en) * | 2019-06-20 | 2022-04-11 | Cellwood Machinery Ab | Apparatus and method for dispersing or refining of organic material, such as cellulose fiber and organic waste |
AU2023230059A1 (en) * | 2022-03-08 | 2024-09-12 | Juno Llc | System and method for recycling waste material having improved washing |
CN114522763B (en) * | 2022-04-24 | 2022-07-19 | 山西辰润交通科技有限公司 | Self-passing type rotary piece for recycling and separating concrete sand and stone |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1629377A (en) * | 1924-07-01 | 1927-05-17 | Enterprise Mfg Co | Feed regulator for grinding mills |
US1712258A (en) * | 1926-12-21 | 1929-05-07 | Compain Jeronimo Diaz | Continuous filter |
US1709133A (en) * | 1928-05-31 | 1929-04-16 | Kerr Fay | Means for preparing pulp in paper making |
US2286132A (en) * | 1940-11-30 | 1942-06-09 | Michael P Walle | Separator |
US2942731A (en) * | 1957-08-09 | 1960-06-28 | Robert B Soldini | Machine for salvaging waste concrete material |
US3113733A (en) * | 1960-10-13 | 1963-12-10 | United States Gypsum Co | Apparatus and method for extracting trash |
US3283792A (en) * | 1963-12-16 | 1966-11-08 | Matthew J Thomas | Portable mill |
US3815835A (en) * | 1972-04-18 | 1974-06-11 | Banyaszati Kutato Intezet | Disaggregation apparatus for producing fine dispersions |
CH574538A5 (en) | 1974-02-26 | 1976-04-15 | Escher Wyss Gmbh | |
SE383006B (en) | 1974-11-07 | 1976-02-23 | Munksjoe Ab | PROCEDURE AND DEVICE FOR RECYCLING FIBERS FROM WASTE PAPER |
US4083499A (en) * | 1976-11-15 | 1978-04-11 | Philip Morris Incorporated | Cigarette package ripper with recycling air leg |
US4251034A (en) * | 1979-01-15 | 1981-02-17 | Entoleter, Inc. | System for reclaiming plastic from metal plated plastic scrap |
FI822894L (en) * | 1981-08-20 | 1983-02-21 | Black Clawson Co | FOERFARANDE OCH ANORDNING FOER AOTERVINNING AV PAPPERSTILLVERKNINGSFIBRER UR SMUTSIGA PAPPERSAVFALLSPRODUKTER |
DE3214294C1 (en) * | 1982-04-19 | 1984-01-05 | Bert 5470 Andernach Steffens | Process for the recovery of cellulose curls and flat wrappings from cellulose hygiene articles |
DD249370A3 (en) * | 1985-04-10 | 1987-09-09 | Molkerei Hoyerswerda Veb | METHOD FOR DISCONNECTING METAL-COATED PLASTICS OR PAPERS |
US5181617A (en) * | 1988-01-22 | 1993-01-26 | Buehler Ag | Method and apparatus for separating at least a fraction from a mixture containing reclaimable materials |
US5042726A (en) * | 1989-11-13 | 1991-08-27 | Sunds Defibrator Ab | Apparatus and method for conjoint adjustment of both the inner and outer grinding spaces of a pulp defibrating apparatus |
US5255859A (en) * | 1990-09-04 | 1993-10-26 | M. A. Industries, Inc. | Method and apparatus for separating and classifying scrap plastic materials |
JPH06508567A (en) * | 1991-03-21 | 1994-09-29 | アドヴァンスド、インヴァイランメントル、リーサイクリング、テクナラジズ、インコーパレイティド | Method for recycling plastic-coated paper product waste and polymer film |
FI88760C (en) * | 1991-04-23 | 1993-12-28 | Njs Patentti Avoin Yhtioe | FOERFARANDE FOER BEHANDLING AV KABELMATERIAL ELLER LIKNANDE |
US5292075A (en) * | 1992-05-29 | 1994-03-08 | Knobbe, Martens, Olson & Bear | Disposable diaper recycling process |
EP0581089A2 (en) * | 1992-07-29 | 1994-02-02 | Dipl.-Ing. SF-Ing. MANFRED BAHNEMANN RECYCLING-SYSTEME GmbH | Method for treating metal-plastic composites |
US5848754A (en) * | 1994-10-12 | 1998-12-15 | Nordischer Maschinenbau Rud. Baader Gmbh & Co. Kg | Method and apparatus for the recovery of packaging and its contents |
US5618003A (en) * | 1995-03-09 | 1997-04-08 | Bot Chan, Inc. | Process and apparatus for reclaiming the components of used disposable sanitary articles |
US5667156A (en) * | 1996-01-04 | 1997-09-16 | Resource Concepts, Inc. | Process for the separation and isolation of precious and semi-precious metals from electronic circuit boards |
-
1996
- 1996-06-24 SE SE9602481A patent/SE506804C2/en not_active IP Right Cessation
-
1997
- 1997-06-17 US US09/202,819 patent/US6206199B1/en not_active Expired - Fee Related
- 1997-06-17 DE DE69712353T patent/DE69712353T2/en not_active Expired - Fee Related
- 1997-06-17 DK DK97928603T patent/DK0932447T3/en active
- 1997-06-17 WO PCT/SE1997/001076 patent/WO1997049494A1/en active IP Right Grant
- 1997-06-17 JP JP50280798A patent/JP2000513267A/en active Pending
- 1997-06-17 EP EP19970928603 patent/EP0932447B1/en not_active Expired - Lifetime
- 1997-06-17 AT AT97928603T patent/ATE216915T1/en not_active IP Right Cessation
- 1997-06-17 CA CA 2258968 patent/CA2258968A1/en not_active Abandoned
-
1998
- 1998-12-23 NO NO986123A patent/NO986123L/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016087220A1 (en) * | 2014-12-04 | 2016-06-09 | Andritz Ag | Method for the preparation of electrical and electronic components for the recovery of valuable substances |
Also Published As
Publication number | Publication date |
---|---|
NO986123L (en) | 1999-02-24 |
JP2000513267A (en) | 2000-10-10 |
DE69712353T2 (en) | 2002-10-31 |
NO986123D0 (en) | 1998-12-23 |
WO1997049494A1 (en) | 1997-12-31 |
SE9602481D0 (en) | 1996-06-24 |
SE9602481L (en) | 1997-12-25 |
EP0932447A1 (en) | 1999-08-04 |
US6206199B1 (en) | 2001-03-27 |
CA2258968A1 (en) | 1997-12-31 |
DE69712353D1 (en) | 2002-06-06 |
DK0932447T3 (en) | 2002-08-19 |
SE506804C2 (en) | 1998-02-16 |
ATE216915T1 (en) | 2002-05-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0932447B1 (en) | A method and an apparatus for recycling different components in a multiple layer material | |
KR100282784B1 (en) | Method and apparatus for separating viscoelastic material such as plastic from material such as paper which is deformed under mechanical stress | |
US6045070A (en) | Materials size reduction systems and process | |
JP2965693B2 (en) | Method and apparatus for treating waste | |
US3595488A (en) | Method of waste treatment | |
JPS5876588A (en) | Method and apparatus for recovering paper making fiber from contaminated used paper product | |
US4604193A (en) | Method and apparatus for sorting out a mixture of paper pulp and contaminants | |
CN209397422U (en) | A kind of regenerated papermaking recovery processing regenerating unit | |
JP2007050347A (en) | Crushing polishing apparatus and treating method of contaminated soil using it | |
JP2018075571A (en) | Separation device of paper material and plastic film of paper-made liquid container | |
CN109457522A (en) | Recovery processing regenerating unit for waste paper papermaking | |
JPH0320486B2 (en) | ||
US5797549A (en) | Apparatus for separating plastics from paper fiber | |
CA1193520A (en) | Method of and apparatus for debarking wood chips | |
US3713594A (en) | Waste treatment system | |
US3765613A (en) | Pulp refining system and apparatus | |
JPH01314794A (en) | Method and apparatus for treating packed secondary fiber feed material | |
USRE28677E (en) | Waste treatment system | |
EP1017471B1 (en) | An apparatus for screening and compacting | |
CA2022778A1 (en) | Method for processing waste paper | |
JPS6348720Y2 (en) | ||
EP1313908B1 (en) | Pulper for producing paper pulp from waste paper | |
US11911774B2 (en) | Carpet recycling process and method | |
KR100363941B1 (en) | System for treating wastes | |
CA1158904A (en) | Method and means for use in the manufacture of fibre pulp |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19981224 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE DK FI FR GB IT LI |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20010706 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE DK FI FR GB IT LI |
|
REF | Corresponds to: |
Ref document number: 216915 Country of ref document: AT Date of ref document: 20020515 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69712353 Country of ref document: DE Date of ref document: 20020606 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20020617 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20020619 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20020620 Year of fee payment: 6 Ref country code: AT Payment date: 20020620 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20020627 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20020725 Year of fee payment: 6 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20020827 Year of fee payment: 6 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: PATENTANWAELTE SCHAAD, BALASS, MENZL & PARTNER AG |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20030204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030617 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030617 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030617 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030630 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040101 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20030617 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040227 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050617 |